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GB2361544B - Metal detector - Google Patents

Metal detector

Info

Publication number
GB2361544B
GB2361544B GB0009936A GB0009936A GB2361544B GB 2361544 B GB2361544 B GB 2361544B GB 0009936 A GB0009936 A GB 0009936A GB 0009936 A GB0009936 A GB 0009936A GB 2361544 B GB2361544 B GB 2361544B
Authority
GB
United Kingdom
Prior art keywords
foodstuff
excitation coil
volume
itself
receiver coils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB0009936A
Other versions
GB2361544A (en
GB0009936D0 (en
Inventor
Andrew Michael Britton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thermo Electron Weighing and Inspection Ltd
Original Assignee
Goring Kerr Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goring Kerr Ltd filed Critical Goring Kerr Ltd
Priority to GB0009936A priority Critical patent/GB2361544B/en
Publication of GB0009936D0 publication Critical patent/GB0009936D0/en
Priority to AT01909983T priority patent/ATE438111T1/en
Priority to DE60139387T priority patent/DE60139387D1/en
Priority to AU37569/01A priority patent/AU775863B2/en
Priority to CA2406460A priority patent/CA2406460C/en
Priority to PCT/GB2001/000958 priority patent/WO2001081953A1/en
Priority to US10/258,324 priority patent/US7061236B2/en
Priority to EP01909983A priority patent/EP1275016B1/en
Publication of GB2361544A publication Critical patent/GB2361544A/en
Application granted granted Critical
Publication of GB2361544B publication Critical patent/GB2361544B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Glass Compositions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

A metal detector has a circular excitation coil ( 10 ) through which foodstuffs to be tested ( 65 ) pass, on a conveyor belt ( 40 ). The excitation coil ( 10 ) is excited by a stable oscillator ( 50 ) and the lines of flux generated by the excitation coil ( 10 ) link two receiver coils ( 20, 30 ) equidistantly spaced either side of the excitation coil ( 10 ). As a foodstuff ( 65 ) having a foreign ferromagnetic or electrically conductive object therein passes through the receiver coils ( 20, 30 ), a voltage is induced in them. This induced voltage is phase compensated. The change in amplitude or frequency of the oscillator ( 50 ) as the foodstuff ( 65 ) moves through the excitation coil ( 10 ) is also passed to the processor ( 70 ) which removes the artifacts from the detector signal caused by the volume of the foodstuff ( 65 ) itself. The resultant signal, which was previously swamped by the effect of the volume of the foodstuff itself, can then be detected and the foodstuff can be removed from the conveyor ( 40 ).
GB0009936A 2000-04-20 2000-04-20 Metal detector Expired - Lifetime GB2361544B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB0009936A GB2361544B (en) 2000-04-20 2000-04-20 Metal detector
CA2406460A CA2406460C (en) 2000-04-20 2001-03-06 Metal detector
DE60139387T DE60139387D1 (en) 2000-04-20 2001-03-06 DEVICE AND METHOD FOR METAL DETECTION
AU37569/01A AU775863B2 (en) 2000-04-20 2001-03-06 Metal detector
AT01909983T ATE438111T1 (en) 2000-04-20 2001-03-06 DEVICE AND METHOD FOR METAL DETECTION
PCT/GB2001/000958 WO2001081953A1 (en) 2000-04-20 2001-03-06 Metal detector
US10/258,324 US7061236B2 (en) 2000-04-20 2001-03-06 Metal detector
EP01909983A EP1275016B1 (en) 2000-04-20 2001-03-06 Device and method for metal detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0009936A GB2361544B (en) 2000-04-20 2000-04-20 Metal detector

Publications (3)

Publication Number Publication Date
GB0009936D0 GB0009936D0 (en) 2000-06-07
GB2361544A GB2361544A (en) 2001-10-24
GB2361544B true GB2361544B (en) 2004-07-07

Family

ID=9890391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0009936A Expired - Lifetime GB2361544B (en) 2000-04-20 2000-04-20 Metal detector

Country Status (8)

Country Link
US (1) US7061236B2 (en)
EP (1) EP1275016B1 (en)
AT (1) ATE438111T1 (en)
AU (1) AU775863B2 (en)
CA (1) CA2406460C (en)
DE (1) DE60139387D1 (en)
GB (1) GB2361544B (en)
WO (1) WO2001081953A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215875B2 (en) 2012-02-10 2019-02-26 Illinois Tool Works Inc. Metal detector

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244104B4 (en) * 2002-09-23 2006-02-23 Wenglor Sensoric Gmbh Inductive proximity switch
AT501669B1 (en) * 2003-10-28 2007-01-15 Kerschhaggl Peter Dipl Ing METHOD AND DEVICE FOR THE DISTINCTION OF AN ELECTROMAGNETIC CHANGE FIELD INFLUENCING PARTS
EP1591272A1 (en) * 2004-04-26 2005-11-02 Müller Martini Holding AG Verification of the quality of a stapling of printed products
DE102004029192C5 (en) * 2004-06-16 2014-11-13 Wenglor sensoric elektronische Geräte GmbH Electrical circuit
CA2789097C (en) 2005-04-28 2017-02-21 Proteus Digital Health, Inc. Pharma-informatics system
US8802183B2 (en) 2005-04-28 2014-08-12 Proteus Digital Health, Inc. Communication system with enhanced partial power source and method of manufacturing same
RU2297017C1 (en) * 2005-11-18 2007-04-10 Закрытое акционерное общество "Научно-производственное предприятие УРАЛЧЕРМЕТАВТОМАТИКА" Metal presence detection apparatus
US7893690B2 (en) * 2007-07-19 2011-02-22 Carnes Company, Inc. Balancing circuit for a metal detector
US7791337B2 (en) * 2007-07-19 2010-09-07 Carnes Company, Inc. Metal detector
US20110109307A1 (en) * 2008-04-23 2011-05-12 Manfred Artinger Digitally Operating Device for Detecting Metallically Conductive Parts
CN102016646B (en) * 2008-04-23 2013-06-05 麦斯特罗尼仪器有限责任公司 Device for detecting metallically conductive parts
SG10201810784SA (en) 2009-04-28 2018-12-28 Proteus Digital Health Inc Highly Reliable Ingestible Event Markers And Methods For Using The Same
SG184494A1 (en) 2010-04-07 2012-11-29 Proteus Biomedical Inc Miniature ingestible device
US8771085B1 (en) 2010-08-06 2014-07-08 Arthur C. Clyde Modular law enforcement baton
EP2439559B1 (en) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Method for operating of a metal detection system and metal detection system
EP2439560B1 (en) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Method for monitoring the operation of a metal detection system and metal detection system
BR112013008207B1 (en) 2010-10-07 2021-06-01 Mettler-Toledo Safeline Limited METHOD FOR OPERATING A METAL DETECTION SYSTEM AND A METAL DETECTION SYSTEM
EP2642983A4 (en) 2010-11-22 2014-03-12 Proteus Digital Health Inc Ingestible device with pharmaceutical product
EP2544027A1 (en) 2011-07-08 2013-01-09 Mettler-Toledo Safeline Limited Metal detector for production and packaging lines
WO2015112603A1 (en) 2014-01-21 2015-07-30 Proteus Digital Health, Inc. Masticable ingestible product and communication system therefor
US9018935B2 (en) 2011-09-19 2015-04-28 Mettler-Toledo Safeline Limited Method for operating a metal detection apparatus and apparatus
GB2506931B (en) * 2012-10-15 2014-08-27 Illinois Tool Works Metal detector
ES2579552T3 (en) * 2012-02-17 2016-08-12 Mettler-Toledo Safeline Limited Metal detector for production and packaging chains
CA2871330A1 (en) * 2012-05-10 2013-11-14 Sandvik Mining And Construction Rsa (Pty) Ltd Ore analysis system
ES2396829B1 (en) * 2012-11-06 2013-08-23 La Farga Lacambra, S.A. System of detection of deep internal defects in metal parts manufactured by continuous or intermittent processes of lamination, wire drawing and forging, and corresponding method
WO2014120669A1 (en) 2013-01-29 2014-08-07 Proteus Digital Health, Inc. Highly-swellable polymeric films and compositions comprising the same
BR102013004787A2 (en) * 2013-02-28 2015-11-24 Inst Tecnológico De Aeronáutica Ita portable identification device, magnetic marker surgical objects, magnetic marker surgical object identification method and magnetic marker surgical object prevention system
JP5941240B2 (en) * 2013-03-15 2016-06-29 プロテウス デジタル ヘルス， インコーポレイテッド Metal detector device, system and method
RU2531125C1 (en) * 2013-04-17 2014-10-20 Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) Radiating electrode for offshore geoelectrical survey
US9796576B2 (en) 2013-08-30 2017-10-24 Proteus Digital Health, Inc. Container with electronically controlled interlock
CN104569137B (en) * 2013-10-16 2018-07-17 日立金属株式会社 Permeability sensor and magnetic conductivity detection method
US10084880B2 (en) 2013-11-04 2018-09-25 Proteus Digital Health, Inc. Social media networking based on physiologic information
US10078147B2 (en) 2014-07-17 2018-09-18 The United States Of America, As Represented By The Secretary Of The Army Detector
US10295618B2 (en) 2014-09-19 2019-05-21 Hitachi Metals, Ltd. Magnetic permeability sensor and magnetic permeability detecting method, dielectric permittivity sensor and dielectric permittivity detecting method, and magnetic permeability and dielectric permittivity sensor and magnetic permeability and dielectric permittivity detecting method
US11051543B2 (en) 2015-07-21 2021-07-06 Otsuka Pharmaceutical Co. Ltd. Alginate on adhesive bilayer laminate film
CN105911599A (en) * 2016-03-28 2016-08-31 大同市快安科技有限公司 Detection device and method based on metal detection automatic balance compensation technology
CN105842742A (en) * 2016-03-28 2016-08-10 大同市快安科技有限公司 Specific metal detecting device and specific metal intelligent identification learning method
JP7011261B2 (en) * 2016-06-06 2022-01-26 株式会社イシダ Foreign matter inspection device
JP6552148B1 (en) 2016-07-22 2019-07-31 プロテウス デジタル ヘルス， インコーポレイテッド Electromagnetic sensing and detection of ingestible event markers
US10820831B2 (en) 2016-10-26 2020-11-03 Proteus Digital Health, Inc. Methods for manufacturing capsules with ingestible event markers
JP6790323B2 (en) * 2017-02-27 2020-11-25 アンリツインフィビス株式会社 Metal detector
US11493660B2 (en) 2018-01-31 2022-11-08 Canon Denshi Kabushiki Kaisha Inspection device
JP7456831B2 (en) 2019-04-17 2024-03-27 メトラー－トレド・セーフライン・リミテッド Methods for operating metal detectors and metal detectors
EP3726255B1 (en) 2019-04-17 2025-08-13 Mettler-Toledo Safeline Limited Method for operating a metal detector and metal detector
JP7441097B2 (en) * 2019-04-17 2024-02-29 メトラー－トレド・セーフライン・リミテッド How to operate a metal detector, and metal detectors
CA3052301A1 (en) 2019-08-16 2021-02-16 Nova Chemicals Corporation Detection / removal of metal contamination
WO2021100217A1 (en) * 2019-11-20 2021-05-27 株式会社エー・アンド・デイ Metal detector
EP4421538A1 (en) * 2023-02-24 2024-08-28 Mettler-Toledo Safeline Limited Metal detection apparatus with a test device and test device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230611A (en) * 1989-03-30 1990-10-24 Cintex Ltd Detecting foreign bodies in products
EP0780704A2 (en) * 1995-12-21 1997-06-25 White's Electronics, Inc. Plural frequency method and system for identifying metal objects in a background environment
US5691640A (en) * 1995-11-17 1997-11-25 Ramsey Technology, Inc. Forced balance metal detector
US5729143A (en) * 1996-06-03 1998-03-17 Zircon Corporation Metal detector with nulling of imbalance
DE19850749C1 (en) * 1998-11-04 2000-03-30 Eckart Hiss Inductive proximity sensor for detecting metal objects; has signal from detector coil and generator coil input to mixer

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823365A (en) * 1973-01-24 1974-07-09 S Anderson Metal detecting apparatus having improved ground-effect immunity
DE3274391D1 (en) * 1981-02-09 1987-01-08 Goring Kerr Ltd Metal detection apparatus
FR2657696B1 (en) * 1990-02-01 1992-07-24 Centre Nat Rech Scient DEVICE FOR DETECTING METAL BODIES, IN PARTICULAR FINE PARTICLES.
US5432444A (en) * 1990-10-23 1995-07-11 Kaisei Engineer Co., Ltd. Inspection device having coaxial induction and exciting coils forming a unitary coil unit
FR2716979B1 (en) * 1994-03-04 1996-03-29 Telemecanique Inductive proximity switch.
DE19521266C1 (en) * 1995-06-10 1997-02-13 Mesutronic Geraetebau Gmbh Device for the detection of metallic conductive parts
US5820918A (en) * 1996-07-11 1998-10-13 Hercules Incorporated Medical devices containing in-situ generated medical compounds
JPH11295439A (en) * 1998-04-07 1999-10-29 Ishida Co Ltd Foreign matter detection machine and system
US6261302B1 (en) * 1998-06-26 2001-07-17 Ethicon Endo-Surgery, Inc. Applier for implantable surgical marker
US8282573B2 (en) * 2003-02-24 2012-10-09 Senorx, Inc. Biopsy device with selectable tissue receiving aperture orientation and site illumination
US6450937B1 (en) * 1999-12-17 2002-09-17 C. R. Bard, Inc. Needle for implanting brachytherapy seeds
US6350244B1 (en) * 2000-02-21 2002-02-26 Biopsy Sciences, Llc Bioabsorable markers for use in biopsy procedures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230611A (en) * 1989-03-30 1990-10-24 Cintex Ltd Detecting foreign bodies in products
US5691640A (en) * 1995-11-17 1997-11-25 Ramsey Technology, Inc. Forced balance metal detector
EP0780704A2 (en) * 1995-12-21 1997-06-25 White's Electronics, Inc. Plural frequency method and system for identifying metal objects in a background environment
US5729143A (en) * 1996-06-03 1998-03-17 Zircon Corporation Metal detector with nulling of imbalance
DE19850749C1 (en) * 1998-11-04 2000-03-30 Eckart Hiss Inductive proximity sensor for detecting metal objects; has signal from detector coil and generator coil input to mixer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215875B2 (en) 2012-02-10 2019-02-26 Illinois Tool Works Inc. Metal detector

Also Published As

Publication number Publication date
ATE438111T1 (en) 2009-08-15
WO2001081953A1 (en) 2001-11-01
AU775863B2 (en) 2004-08-19
US7061236B2 (en) 2006-06-13
GB2361544A (en) 2001-10-24
US20030164766A1 (en) 2003-09-04
CA2406460C (en) 2010-10-12
EP1275016B1 (en) 2009-07-29
EP1275016A1 (en) 2003-01-15
DE60139387D1 (en) 2009-09-10
GB0009936D0 (en) 2000-06-07
CA2406460A1 (en) 2001-11-01
AU3756901A (en) 2001-11-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
S73 Revocation on comptroller's initiative (section 73/patents act 1977)

Free format text: PATENT REVOKED; PATENT REVOKED UNDER SECTION 73(2) ON 9 SEPTEMBER 2011